Aim To explore the effect of targeted inhi-bition of co-signaling molecule B7-H3 on the growth,migration,and angiogenesis ability of human umbilical vein endothelial cells(HUVECs).Methods Small interference RNA was used to knock down HUVECs B7-H3 molecules.CCK-8 test was used to detect cell proliferation at 24 h,48 h and 72 h.Transwell test was then used to detect 24 h cell migration,and three-dimensional cell culture was used to observe cell angio-genesis.Results Compared with the negative control group(siRNA-Control),siRNA-720,siRNA-1707 and siRNA-1690 had different inhibitory effects on the expression of B7-H3.B7-H3 inhibition of siRNA-1690 was significantly higher than that of siRNA-720 and siRNA-1707,and siRNA-1690 sequence was chosen for follow-up experiment.The results of CCK-8 cell vi-ability assay showed that the proliferation ability of HU-VECs decreased by 24％,22％(P＞0.05,compared with 24 h)and 15％(P＜0.05,compared with 48 h)respectively at 24 h,48 h and 72 h after B7-H3 knockout.The migration ability of B7-H3 for 24 h was significantly lower than that of siRNA-Control group(P＜0.01).The results of three-dimensional cell cul-ture showed that the angiogenic ability of HUVECs de-creased significantly after si-B7-H3 knockdown of B7-H3 gene(P＜0.01).Conclusion Targeting B7-H3 inhibits the growth,migration,and angiogenesis of hu-man umbilical vein endothelial cells.

Aim To explore the ameliorative effects of berberine(BBR)on diabetic nephropathy(DN)in mice and investigate its potential mechanisms through transcriptomic analysis.Methods 8-week-old db/db mice were randomly assigned into four groups:model group(DN group),BBR 50 mg·kg-1 group(BBR-L group),BBR 100 mg·kg-1 group(BBR-H group),and empagliflozin 10 mg·kg-1 group(EMPA group).Age-matched db/m mice were used as the control group(NC group),with eight mice in each group.Each group received intragastric administration once daily for eight weeks.After the treatment,serum,u-rine,and kidney samples were collected to evaluate re-nal function indicators and observe renal pathological changes.Differentially expressed genes(DEGs)in kidney tissue were identified through transcriptomic a-nalysis,followed by KEGG and GO enrichment analy-sis.Potential targets were further validated using mo-lecular docking,molecular dynamics simulations,West-ern blot,and immunohistochemistry.Results Both BBR and EMPA significantly reduced fasting blood glu-cose levels in DN mice,improved renal function,and alleviated renal injury and fibrosis.Compared to the NC group,855 DEGs were identified in the DN group,while 194 DEGs were identified in the BBR-H group compared to the DN group.KEGG enrichment analysis indicated that the mechanisms underlying BBR's effects on DN were primarily related to type 1 diabetes and bile secretion pathways.Molecular docking results demonstrated a strong binding affinity between BBR and FXR and a moderate binding affinity with SHP.Molecular dynamics simulations corroborated the doc-king results.FXR and SHP protein expression signifi-cantly decreased in the DN group compared to the NC group.At the same time,BBR treatment significantly increased the expression of these proteins compared to the DN group.Conclusion BBR may mitigate DN-in-duced renal injury by modulating bile acid and lipid homeostasis through the FXR-SHP pathway.

The objective of this study was to determine the frequency and resistance patterns of ESBL-producing E.coli in lambs with diarrhea in the Kashi area,Xinjiang.The findings may provide guidance for the prevention and control of clinical E.coli disease.We collected 385 samples of perianal feces from lambs with diarrhea in the Kashgar area.From these samples,we isolated 371 strains of E.coli.We then used the double-paper-sheet synergistic method to screen for ESBL-producing E.coli.Additionally,we conducted analyses to identify drug-resistance genes,analyze drug resistance,and study the phylo-typing of the screened strains.Of 371 E.coli strains,204 were identified as ESBL-producing strains.The prevalence rates of blaCTX-M,blaCTX-M-1G,blaCTX-M-9G,and bla TEM resistance genes was 67.65％,69.12％,30.39％,and 63.73％,respectively.All ESBL-pro-ducing strains were resistant to multiple drugs,with resistance rates ranging from 90.69％to 100％for eight specific drugs:ampicillin,cefotaxime,gentamicin,enrofloxacin,azithromy-cin,tetracycline,chloramphenicol,methotrexate,and amitrazine.The phylogenetic subgroups of the strains were distributed primarily in groups A and D.Among group A strains,41.11％exhibited resistance to ten drugs,whereas among group D strains,40％exhibited resistance to 11 drugs.ESBL-pro-ducing strains of Escherichia coli are the main pathogens cau-sing diarrhea in lambs in the Kashgar region;group A is the main group,and all groups are multi-drug resistant.

Objective:This study aims to evaluate the impact of Diagnosis-Related-Groups(DRGs)payment on the average total cost,length of stay,service volume,effectiveness,and characteristics of traditional Chinese medicine(TCM)hospitals.Methods:A national medical center specializing in TCM was selected as the research subject.The Difference-in-Difference Model(DID)was utilized to analyze the differences in various indicators between insured patients(intervention group)and uninsured patients(control group)before and after the implementation of the payment reform policy.The reliability and stability of the model were verified through parallel trend tests and placebo tests.Results:The coefficients of DID interaction terms for eleven indicators including average total hospitalization cost,number of cases,length of stay,proportion of medical service revenue,and proportion of herbal medicine revenue were significant(P<0.05).The DID interaction term coefficients for four indicators including herbal medicine usage rate and proportion of non-pharmacological TCM therapy revenue were not significant(P>0.05).Conclusion:DRG payment significantly reduced the per-admission cost,with significant decreases in consumables and medical technology expenses,optimizing cost structure,and a slight decrease in the proportion of herbal medicine costs.It is necessary to further expand the sample size,track policy impacts,and comprehensively evaluate the effects of DRG payment on TCM hospitals in China.

Wnt/β-catenin is a signaling pathway associated with embryonic development, organ formation, cancer, and fibrosis. Its activation can repair kidney damage during acute kidney injury (AKI) and accelerate the occurrence of renal fibrosis after chronic kidney disease (CKD). Interestingly, p53 has also been found as a key modulator in AKI and CKD in recent years. Meantime, some studies have found crosstalk between Wnt/β-catenin signaling pathways and p53, but more evidence is required on whether they have synergistic effects in renal disease progression. This article reviews the role and therapeutic targets of Wnt/β-catenin and p53 in AKI and CKD and proposes for the first time that Wnt/β-catenin and p53 have a synergistic effect in the treatment of renal injury.

Objective:To evaluate the relationship between the Geriatric Nutritional Risk Index (GNRI) and postoperative pulmonary complications (PPCs) in elderly patients undergoing thoracoscopic lung resection.Methods:Two hundred and ninety-one elderly patients of either sex, aged ≥60 yr, of American Society of Anesthesiologists Physical Status classificationⅠ-Ⅲ, undergoing elective thoracoscopic lung resection at Xuzhou Cancer Hospital from July 2022 to September 2023, were selected. Patients were divided into high GNRI group or low GNRI group based on the optimal cutoff value of GNRI (represented as a continuous variable) determined by the receiver operating characteristic curve to predict PPCs. The occurrence of PPCs was compared between the two groups within the first 7 postoperative days. The relationship between GNRI and PPCs was evaluated by the logistic regression analysis. The nonlinear correlation between GNRI score (expressed as a continuous variable) and PPCs was investigated by the restricted cubic spline. The accuracy of the GNRI, Assess Respiratory Risk in Surgical Patients in Catalonia (ARISCAT) score, and combination of the two in predicting the occurrence of PPCs was evaluated by the areas under the ROC curve (95% confidence interval[ CI]). Results:A total of 269 patients were finally included, with 114 in high GNRI group (GNRI≥100.9) and 155 in low GNRI group (GNRI<100.9). Compared with high GNRI group, the incidence of PPCs was significantly increased compared with low GNRI group (42.6% vs 16.7%, P<0.001). The multivariate logistic regression analysis showed that low GNRI was a risk factor for PPCs, while elevated GNRI score was a protective factor for PPCS in elderly patients undergoing thoracoscopic lung resection ( P<0.05). The restricted cubic spline showed a linear correlation between GNRI score and PPCs ( P=0.947). The areas under the receiver operating characteristic curves of the GNRI, ARISCAT score, and combination of the two in predicting PPCs were 0.646 (95% CI 0.589-0.704), 0.619 (95% CI 0.564-0.674) and 0.708 (95% CI 0.647-0.769), respectively. Conclusions:Low GNRI is an independent risk factor for PPCs in elderly patients undergoing thoracoscopic lung resection, while elevated GNRI score is a protective factor. The combination of GNRI and ARISCAT score can predict the occurrence of PPCs.

AIM To establish a two reference substances for determination of multiple components(TRSDMC)method for the simultaneous content determination of neochlorogenic acid,chlorogenic acid,cryptochlorogenic acid,luteolin-7-O-glucuronide,isochlorogenic acid B,isochlorogenic acid A,isochlorogenic acid C,deoxyelephantopin,isodeoxyelephantopin,isoscabertopin and scabertopin in Elephantopus scabre L..METHODS The analysis was performed on a 35℃thermostatic Waters Symmetry C18,Phenomenex C18,Agilent ZORBAX Eclipse Plus C18 columns(4.6 mm×250 mm,5.0 μm),with the mobile phase comprising of acetonitrile and 0.1%phosphoric acid flowing at 1.0 mL/min in a gradient elution manner,and the detection wavelengths were set at 220,326 nm.Chlorogenic acid was used as an internal standard to calculate the relative correction factors of neochlorogenic acid,cryptochlorogenic acid,luteolin-7-O-glucuronide,isochlorogenic acid B,isochlorogenic acid A and isochlorogenic acid C,while isodeoxyelephantopin was used as an internal standard to calculate the relative correction factors of deoxyelephantopin,scabertopin and isoscabertopin,after which the content determination was made.Subsequently,cluster analysis,principal component analysis and orthogonal partial least squares-discriminant analysis were conducted.RESULTS Eleven constituents showed good linear relationships within their own ranges(r≥0.999 0),whose average recoveries were 95.3%-103.4%with the RSDs of 0.32%-3.45%.The result obtained by TRSDMC approximated those obtained by external standard method.Isochlorogenic acid A,isochlorogenic acid C,isochlorogenic acid B,chlorogenic acid,luteolin-7-O-glucuronide and cryptochlorogenic acid were taken as quality differential constituents.CONCLUSION This reliable and stable method can be used for the quality control of E.scabre.

Objective:To explore the clinical significance of the dominant B-cell epitope peptide of the human cytomegalovirus (HCMV) UL95 gene, as well as the correlation between the plasma UL95 specific antibody levels and clinical indicators in systemic lupus erythematosus (SLE) patients, in order to find auxiliary diagnostic indicators for SLE.Methods:A non-randomized control study was conducted to analyze the sequencial characteristics and polymorphisms of HCMV UL95 gene, and bioinformatics analysis and chemical synthesis were used to synthesize UL95 dominant B cell epitope short peptides, which were used as coating antigens. Enzyme-linked immunosorbent assay (ELISA) assay was used to detect the specific antibody levels of plasma UL95 of 97 SLE patients and 35 healthy controls (HC). Receiver operating characteristic (ROC) curve analysis was used to evaluate the diagnostic value of UL95 short peptide antibodies for SLE diagnosis. Pearson correlation test was used to analyze the correlation between UL95 specific antibody levels and clinical indicators in SLE patients.Results:The nucleotide sequence similarity of UL95 gene was 92.9%-100%, and the amino acid sequence similarity was 92.1%-100%, whose sequences were highly conserved and homologous. A comprehensive prediction of multiple parameters resulted in 6 possible dominant B cell epitopes, named (Bp1, Bp2, Bp3, Bp4, Bp5, Bp6) respectively. The ELISA results showed that the levels of plasma UL95 specific antibodies (0.35±0.12) in SLE patients were significantly higher than those of the HC group (0.28±0.10)( t=3.091, P=0.002). The area under the ROC curve for distinguishing SLE and HC was 0.703, with a sensitivity of 54.6% and a specificity of 88.6%. In addition, the UL95 specifific antibody levels ( OD value) in the middle-high activity subgroup (systemic lupus erythematosus disease activity index, SLEDAI≥4) were higher (0.36±0.10) than those in the low activity subgroup (SLEDAI<4)(0.30±0.07) ( t=?2.055, P=0.044). UL95 specific antibody levels were positively correlated with clinical indicators such as total immunoglobulin G (IgG) and total immunoglobulin M (IgM), while negatively correlated with complement component 3 (C3), complement component 4 (C4), and platelet count. Conclusions:The antibody level of UL95 is closely related to the activity of lupus disease. The Bp1 (10-21) peptide segment of UL95 has important significance for the auxiliary diagnosis of SLE and is expected to become a new reference indicator.

Objective To explore the relevant risk factors of H.pylori infection,and provide reference for prevention and treatment of H.pylori in this area,and further provide theoretical basis for the prevention and treatment of gastric cancer.Methods A total of 1200 residents in four districts of Haikou city were investigated by questionnaire and urea 14 C breath test by holistic stratified random sampling to calculate the population infection rate and analyze the risk factors of infection.Results The total infection rate was 32.5％,which was lower than the national H.pylori infection rate.No consumption of fruits and vegetables,no habit of washing hands before meals,and people with gastrointestinal symptoms,are independent risk factors of H.pylori infection.No consumption of pickled products is of great significance to prevent H.pylori infection.Conclusion The prevalence of H.pylori infection in the population of Haikou is lower than the national average,and H.pylori infection is closely related to the poor living habits of residents.

Objective To design a novel oxygenator to solve the existing problems of extracorporeal membrane oxygenation(ECMO)machine in high transmembrane pressure difference,low efficiency of blood oxygen exchange and susceptibility to thrombosis.Methods The main body of the oxygenator vascular access flow field was gifted with a flat cylindrical shape.The topology of the vascular access was modeled in three dimensions,and the whole flow field was cut into a blood inlet section,an inlet buffer,a heat exchange zone,a blood oxygen exchange zone,an outlet buffer and a blood outlet section.The oxygenator was compared with Quadrox oxygenator by means of ANSYS FLUENT-based simulation and prototype experiments.Results Simulation calculations showed the oxygenator designed was comparable to the clinically used ones in general,and gained advantages in transmembrane pressure difference,blood oxygen exchange and flow uniformity.Experimental results indicated that the oxygenator behaved better than Quadrox oxygenator in transmembrane pressure difference and blood oxygen exchange.Conclusion The oxygenator has advantages in transmem-brane pressure difference,temperature change,blood oxygen ex-change and low probability of thrombosis.[Chinese Medical Equipment Journal,2024,45(3):23-28]